API API-SIEE Exam With Confidence Using Practice Dumps

The correct answer isC. NFPA 70 requires thatmetal raceways and metal enclosures be metallically joined together into a continuous electrical conductor. This requirement is fundamental because threaded conduit systems are not only mechanical connections, but also part of theequipment grounding and bonding path. Applying Teflon tape or similar nonconductive thread sealant to conduit threads can interfere with electrical continuity across the joint, which defeats the code intent for bonding and grounding.

From an API source inspection and quality surveillance perspective, the inspector must verify that conduit systems, fittings, and enclosures are assembled in a way that preserves electrical integrity, especially where grounding continuity is critical for personnel safety, fault-current return, and hazardous-location protection methods. The use of Teflon tape is therefore not accepted as a general practice on threaded conduit connections because it can compromise the metallic path. Option A is incorrect because the rule is not limited to Class I, Division 2. Option B is incorrect because water exclusion does not override bonding requirements. Option D is also incorrect because Teflon tape does not create an approved explosion-proof vapor seal.

The correct answer isA. Forsealed transformers, ANSI C57.12 places limits on the pressure that can develop inside the tank during operation under rated conditions. The purpose of this requirement is to ensure that normal thermal expansion of the insulating liquid and internal atmosphere does not create excessive mechanical stress on the tank, cover, gaskets, welds, or fittings. In practical terms, the standard intends that the sealed tank construction safely contain the internal pressure developed in service without distortion, leakage, or failure.

From an API source inspection standpoint, this requirement is important because the inspector must verify that the transformer design, fabrication, and routine testing demonstrate the integrity of the tank and sealing system. This includes reviewing vendor drawings, design data, pressure-related test records, weld quality, and evidence that the tank can withstand expected service conditions. If internal pressure were allowed to rise excessively, it could compromise gasket sealing, create oil leaks, or damage the enclosure, all of which would affect reliability and acceptance.

Therefore, among the listed choices,one atmosphereis the correct maximum value stated in this context.

The correct answer isD. Calibrated torque wrench. In source inspection and quality surveillance of electrical equipment, the accepted method for verifying the tightness ofaccessible bolted electrical connectionsis to check them using aproperly calibrated torque wrenchagainst the manufacturer’s specified torque values. This is the most reliable way to confirm that the connection has been tightened to the required mechanical and electrical standard. Proper torque is critical because under-tightening can produce high resistance, localized heating, arcing, and eventual failure, while over-tightening can damage threads, connectors, lugs, or bus material.

The other options do not provide a true verification method.Compression of the lock-nutis not a recognized measurement of electrical connection tightness.Visual inspection of torque markingsmay indicate that tightening was performed, but it does not independently verify the actual torque achieved.Verification of an assembly check sheetonly confirms that work was recorded, not that the joint currently meets the specified torque requirement. Therefore, for source inspectors evaluating electrical assemblies, the correct and defensible method is use of acalibrated torque wrenchto verify accessible bolted electrical connections.